Alloy



Patented Sept. 25, 1923.

OTTO NAJAC H'I, OE GHICAGO, ILLINQI S.

ALLOY.

No Drawing.

To all whom it may concern.

Be itknown that I, O'r'ro NAJACHT, a subject of Germany, residing atChicago, in the and capable of being cut smoother and much faster thanordinary bronze, although being somewhat harder.

The alloy is composed of the following ingredients:

Copper 3 pounds. Brass 8 ounces. Aluminum "1% ounces.

The materials stated are all laced in a crucible with a flux of oystershe Is, 1 ounce, and lard, 1 ounce, and melted by placing the same in asuitable furnace.

dinar Application filed Febmnw 10, 1922. Seriatfi'o. 585,629.

The finished product is slightly lighter in color than ordinary bronze,and although it is-somewhat harder, it can be machined much more readilThe oyster shell and the lard are used as a flux to remote the fusing ofthe metals, the same cided smoothness in the texture of the finishedproduct being obtained. It will be understood of course that ordinarylime may be substituted for the oyster shells.

The brass used in the composition is or" brass as used in the industriesand readi y obtainable in the open market. A brass of this kind shows onanalysis to he composed approximately of copper, 65.83%; lead, 2.31% andzinc, 31.71%. as

I claim:

An alloy consisting of copper, 3 pounds: aluminum, 1% ounces; and theconstituents of ordinary brass to the amount of 8 ounces.

In testimony whereof I aflix my signature.

OTTO NAJACHT.

ing perfectly blended and a de-- se

